main {
    background: #ccc;
}

section {
    width: 90%;
    min-width: 1200px;
    background-color: #fff;
    margin: auto;
    height: 500px;
}

.main-img {
    width: 100%;
    font-size: 0;
    height: unset;
}

.main-img img {
    width: 100%;
}

.info {
    position: relative;
    height: 480px;
}

.info .float-up {
    min-width: 1200px;
    position: absolute;
    top: -50px;
    background-color: #fff;
    padding: 50px 0 50px 50px;
}

.info .float-up .img {
    width: 49%;
    height: 400px;
    display: inline-block;
    background: url(../images/about_us_ymb.jpg) no-repeat center center/100% 100%;
}

.info .float-up .text {
    display: inline-block;
    width: 40%;
    vertical-align: top;
    padding: 0 60px;
    text-align: left;
}

.info .float-up .text h3 {
    font-size: 28px;
    color: #000;
    font-weight: normal;
    line-height: 60px;
}

.info .text .subtitle {
    font-size: 16px;
    color: #b2b2b2;
    line-height: 32px;
}

.info .text p {
    font-size: 14px;
    color: #666;
    line-height: 28px;
}

section .tip .title {
    font-size: 28px;
    line-height: 54px;
    color: #000;
    text-align: center;
}

section .subtitle {
    font-size: 16px;
    line-height: 54px;
    color: #b2b2b2;
    text-align: center;
}

.office {
    height: 700px;
}

.office .images {
    padding: 50px;
    min-width: 1200px;
    height: 800px;
    border: 1px solid #ccc;
    margin: auto;
    text-align: center;
}

.office .images .item {
    display: inline-block;
    height: 250px;
    width: 250px;
    position: relative;
    overflow: hidden;
}

.office .images .item p {
    background-color: rgba(0, 0, 0, .3);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 16px;
    color: #fff;
    height: 50px;
    line-height: 50px;
}

.office .images .item:hover img {
    transform: scale(1.2);
    transition: 1s;
}

.office .images .left {
    height: 490px;
    width: 290px;
    display: inline-block;
}

.office .images .item1 {
    height: 490px;
    width: 290px;
}

.office .images .right {
    height: 490px;
    width: 860px;
    display: inline-block;
    vertical-align: top;
}

.office .images .item2 {
    height: 250px;
    width: 346px;
}

.office .images .item5 {
    height: 236px;
    width: 286px;
}

.office .images .item6 {
    height: 236px;
    width: 280px;
}

.staff {
    height: 800px;
}

.staff .images {
    position: relative;
    width: 90%;
    margin: auto;
}

.staff .images .item {
    position: absolute;
    display: inline-block;
    padding: 20px;
    border: 4px solid #f0f7ff;
}

.staff .images .item1 {
    left: 62px;
    top: 30px;
}

.staff .images .item2 {
    left: 280px;
    top: 15px;
}

.staff .images .item3 {
    left: 420px;
    top: 35px;
}

.staff .images .item4 {
    left: 570px;
    top: 0px;
}

.staff .images .item5 {
    left: 800px;
    top: 30px;
}

.staff .images .item6 {
    left: 960px;
    top: 10px;
}

.staff .images .item7 {
    left: 0px;
    top: 170px;
}

.staff .images .item8 {
    left: 150px;
    top: 185px;
}

.staff .images .item9 {
    left: 360px;
    top: 185px;
}

.staff .images .item10 {
    left: 545px;
    top: 185px;
}

.staff .images .item11 {
    left: 700px;
    top: 185px;
}

.staff .images .item12 {
    left: 955px;
    top: 230px;
}

.staff .images .item13 {
    left: 90px;
    top: 340px;
}

.staff .images .item14 {
    left: 285px;
    top: 360px;
}

.staff .images .item15 {
    left: 505px;
    top: 380px;
}